The main parameters of Allen - Bradley 1785 - L80B are as follows:
Module Type: Standard processor
Processor: PLC - 5/80
Max User Memory Words: 100,000 words
Battery - backed Static RAM: Yes
EEPROM Program Backup Option: Yes (using 1785 - ME16, - ME32, - ME64, and - M100)
Protected Memory: No
Max Total I/O: 3072 (any mix) or 3072 in + 3072 out (complementary)
Max Analog I/O: 3072
I/O Scan Time per Rack: 10 ms at 57.6 kbits/s, 7 ms at 115.2 kbits/s, 3 ms at 230.4 mbits/s
Max I/O Chassis Total: 93
Max I/O Chassis Extended Local: 0
Max I/O Chassis Universal Remote: 32 max. per I/O link
Communication Ports: Four 3 - pin ports (channel 1a, 1b, 2a, 2b) can be configured as remote I/O scanners, remote I/O adapters, DH+, or unused. One serial port is configurable for EIA RS - 232/RS - 423 systems and is compatible with RS - 422A, with a 25 - pin D - shell physical interface.
Default Serial Port Configuration: 2400 bps, DF1 point - to - point, no parity, one stop - bit, and BCC error check
Supported Protocols: DF1, ASCII, Data Highway Plus (DH+), Remote I/O (RIO)
Power Dissipation: 17.3 watts
Current Draw: 3.3 amps (at 5 volts DC)